baber/WOPTO huggingface dataset:
Patent GB-1388768-A (GB)
Title: Apparatus controlling individually the tensions of a plurality of like cords
IPC: B65H59/38
Filed: 1972-05-15
Abstract: 1388768 Strand tensioning GOODYEAR TIRE & RUBBER CO 15 May 1972 [9 June 1971] 22702/72 Heading D1J In apparatus for controlling strand tension a strand running from a spool normally rotates a pump-motor unit via the spool spindle to pump fluid into a container, and a drop in strand tension below a set value allows a reversed fluid flow to drive the unit to retension the strand. The reversed flow may also wind up a broken strand. A spindle 22, Fig. 3, is connected to a rotary, pneumatic, pumpmotor unit 50 which is connected to interconnected low pressure air chambers 36, 60 and to interconnected high pressure air chambers 34, 56. Compressed air is supplied to all the chambers, and the pressure differential between the low and high pressure chambers is maintained constant. The chambers are formed by the frame members of a creel, Fig. 2, which supports rows of oppositely-facing spindles connected in sets to the chambers. The low pressure chambers may be dispensed with, the units receiving air direct from the atmosphere.
Patent GB-943378-A (GB)
Title: Air gun
IPC: F41B11/684
Filed: 1962-06-13
Abstract: 943,378. Air guns. F. WALTHER. June 13, 1962 [June 15, 1961], No. 22748/62. Heading F3C. In an air gun the piston 13 is movable in the compressed air cylinder 12 by means of a cocking lever 22 and levers 24, 26, the piston being shifted from an upper dead centre position, Fig. 3, to a lower dead centre position, Fig. 4, by a single movement of the cocking lever 22 about its hinge 21 to suck in air and to be returned to its upper dead centre position by a reverse movement of the cocking lever, the arrangement of the lever pivots 21, 25, 27 serving to lock the piston in this position, whereby air in the cylinder 12 and a passage 15 leading to an air release valve 37 is compressed and retained under pressure until the shot is fired by opening the release valve by operation of the trigger 35. The pivots 21, 23, 25 of the levers may be in the form of eccentric pins so that a change in their positions can alter the position of the dead centre at the top of the stroke of the piston 13 and so adjust the pressure of the air above the piston 13. The movement of the cocking lever 22 also serves to open and close the barrel about its pivot 18 and a safety device 39 prevents operation of the trigger when the barrel is open or when the lever 22 is displaced from its position of rest.
Patent GB-764182-A (GB)
Title: Improvements in or relating to a hydraulic regulating device
Inventor: JACKSON KENNETH ROBERT
IPC: F15B13/043
Filed: 1953-08-19
Abstract: 764,182. Fluid-pressure servomotor-control systems. NORTH AMERICAN AVIATION, Inc. Aug. 19, 1953, No. 22859/53. Class 135. An hydraulic regulating device for controlling a double-acting servomotor comprises a pilot valve 24, Fig. 1, continuously reciprocated by solenoids 29, 30 actuated by a constant frequency alternating current of substantially rectangular waveform and a slave valve 2 slidable in a casing 1 having a branched inlet port 10 an exhaust port 11 and motor ports 13, 14 to control the supply and exhaust of pressure liquid to and from the servomotor. The slave valve is centred in a bore 3 in the casing by springs 4, 5 and formed with lands 17, 18 co-operating with the ports 13, 14 and lands 15, 16 having grooves 19,9 therethrough connecting the inlet port 10 with end chambers 6a, 7a. Ducts 21, 22 in the casing connect these end chambers to a bore 20 on opposite sides of a centre land 27 of the pilot valve, which land normally oscillates about an exhaust duct 23 to exhaust equal amounts of liquid from the two end chambers to maintain the slave valve in balance and the ports 13, 14 masked. The solenoids 29, 30 are energized by current. received from push-pull drivers 33, 34, Fig. 2, driven by time-modulator triodes 35, 49 pulsed by blocking triode oscillators 36, 47, a pulse transformer 43, condenser 44 and resistances 45, 46. To move the pilot valve a D.C. imput signal is applied to the grid of the triode 35 by means of a diode 51 and resistances 52, 53, which signal timemodulates the pulse output from the triode 47 to the triodes 35, 49. The modulated signal is then sent to the driver 33 and through a phase inverter 54 to the driver 34 so that the positive and negative parts of the rectangular wave are of unequal duration. The pilot valve then moves so that for each cycle the land 27 connects one of the chambers 6a, 7a to exhaust for a longer period of time than the other chamber to unbalance the pressures acting on the two ends of the slave valve 2 which moves to connect one side of the servomotor to pressure and the other side to exhaust.
Patent GB-686518-A (GB)
Title: Improvements in and relating to refrigerating apparatus
IPC: F25D19/02
Filed: 1951-10-02
Abstract: 686,518. Refrigerating. BRITISH THOMSONHOUSTON CO., Ltd. Oct. 2, 1951 [Oct. 3, 1950], No.22927/51. Class 29 In a refrigerator having inner and outer shells 2, 3 with insulation 4 and a condenser 10 mounted on a plate 12 defining with the rear wall 13 an air duct which may be divided into three vertical ducts by vertical partitions, heat is conveyed from the rear wall 13 to the side wall 14 by a closed air circuit formed by channels in the insulation 4 and constituted by a down-flow channel 17, a bottom channel 20, an up-flow side channel 18 and a top channel 19. A second similar circuit may be provided to convey heat to the other side wall 15. In a modification (Fig. 5), the compressor 8<SP>1</SP> is located in the top rear part of the cabinet in a space 29 and the condenser 10<SP>1</SP> is on the inside of the rear wall 13. Cooling air flows in a closed circuit up over the condenser, over the compressor, down channels 34 in which heat is dissipated to the side walls and from there back to the bottom of the condenser. The heat dissipating channels may be located in such a position as to prevent condensation on the cabinet, e.g. around the door opening.
Patent GB-952145-A (GB)
Title: Fold retaining device for cloth laying machines
IPC: B65H45/101
Filed: 1962-06-15
Abstract: 952,145. Folding fabrics. CUTTING ROOM APPLIANCES CORPORATION. June 15, 1962 [Aug. 7, 1961], No. 23039/62. Heading D1S. A fold retaining device for use with a cloth laying machine comprises a frame element 11; at least one supporting arm element 12 mounted towards one end upon the element 11 and arranged for combined rotational and translational planar motion with respect thereto substantially at one end thereof; a cloth engaging element 13 pivoted to the second end of the element 12; and cam means 36 carried by the element 12 to engage a cam follower 69 fixed to the element 11 whereby said second end of the element 12 is constrained to move vertically along a linear path. Each of the two elements 12 includes a rigid arm 35 and a cam member 36 having a cam slot 63. An operating cam 45 on the cloth laying carriage is engagable with a roller 44 on the arm 35 to raise the element 13. The arm 35 and the member 36 are rigidly secured together by a screw 61 and connected by a shaft 50 which also extends into a horizontal slot 30 in the element 11. The follower 69 engages in the slot 63. A portion 64 of the slot 63 is in the form of a segment of a cardioid so that when the roller 44 is moved vertically upwardly the shaft 50 moves purely horizontally and after the roller 44 reaches its maximum height the follower 69 traverses a slot portion 67 in the form of a segment of a circle having a centre coaxial with the shaft 50. The element 13 comprises a rubber gripping member 85 on a plate 84 depending from a bar 77 supported by brackets 76 pivoted at 89 to a member 37. Levelling elements 14 maintain the element 13 in the angular orientation shown as they are raised and lowered and comprises the member 37 and a triangular member 38 having a pin 100 secured thereto to ride with the shaft 50 in the slot 30 so that an end 92 of the member 37 moves only horizontally during raising and lowering of the elements 12. A locking element 15 locks the elements 12 in their uppermost position whilst the follower 69 traverses the portion 67 and comprises a pintle 108 having a head 109 to engage a bore 113 in the member 36. At the commencement of a laying operation the pintle 108 is manually disengaged. An adjustable member 21 to arrest movement of the cloth-laying carriage is provided on the frame 11.
Patent GB-1412857-A (GB)
Title: Vinylidene chloride copolymer microspheres and process for making same
IPC: C08J9/32
Filed: 1973-05-15
Abstract: 1412857 Expandable polymeric microspheres DOW CHEMICAL CO 15 May 1973 [10 July 1972] 23093/73 Heading C3P Expandable polymeric microspheres are obtained by mixing a monomeric mixture of 90- 60 parts by weight of vinylidene chloride and 10-40 parts of a comonomer with a volatile liquid foaming agent, dispersing this oil phase in water, containing a dispersion stabilizer, as droplets of 1-50 microns diameter and polymerizing using a peroxydicarbonate initiator to obtain hollow polymer particles having the foaming agent encapsulated therein. In the examples acrylonitrile is used as comonomer with divinylbenzene cross-linking agent, the foaming agent is isobutene and the dispersing agent colloidal silicon and a diethanolamineadipic acid copolymer. Various alkyl peroxydicarbonates are used.
Patent GB-715373-A (GB)
Title: Improvements in or relating to a fuel injection pump
Inventor: HOGEMAN HANS
IPC: F02M41/12
Filed: 1952-09-15
Abstract: 715,373. Centrifugal governors. AMERICAN BOSCH CORPORATION Sept. 15, 1952, No. 23162/52. Class 57 [Also in Group XXVIII] A centrifugal governor is driven from the cam shaft 11 of a fuel-injection pump and comprises weights 62 having arms that engage a bearing 68 abutting a sleeve 70 loaded by springs 71, 72. A lever 74 is pivoted on the sleeve 70 and also on a manually adjustable lever pivoted in the casing 60. The lever 74 is connected by links 36, 36a to sleeves controlling the beginning and termination of injection (see Group XXVIII). A cam 76 engages the plate 77 at full speed, full load and the lever 74 engages an adjustable damping spring 78 at light loads to eliminate hunting.
Patent GB-1316283-A (GB)
Title: Machine having a safety control circuit
IPC: F16P3/22
Filed: 1970-05-13
Abstract: 1316283 Machinery safety devices VERSON ALLSTEEL PRESS CO 13 May 1970 [14 May 1969] 23175/70 Heading F2J A machine, such as a press, has two operator control stations 59, 59<SP>1</SP> having self-returning manually operable push buttons PB-2, PB-3 and PB-2<SP>1</SP>, PB-3<SP>1</SP> respectively controlling normally open switch means MS-2c, MS-3c, MS-2c<SP>1</SP>, MS-3c<SP>1</SP>, in a control circuit in series with a clutch relay CR, and controlling first normally closed switch means MS-2b, MS-3b, MS-2b<SP>1</SP>, MS-3b<SP>1</SP> connected separately but each in series with a relay Y which when energized opens a switch Y-3 in series with the clutch relay CR. Thus if any one of the push-buttons remains unpressed, relay Y is energized and, through switch Y-3, prevents energization of clutch relay CR. When all the buttons are pressed, relay Y is de-energized and the circuit through clutch relay CR completed. The clutch relay CR operates a switch CR-3 in series with a solenoid S1 which controls a valve in a fluid pressure control system of a clutch. The circuit also includes an anti-repeat relay AR controlling switches AR-1, AR-2, AR-4, manually operated emergency stop switches MS-1, MS-1<SP>1</SP>, cam switches CS-1, CS-2, and a control knob for moving various switches into positions corresponding to "inch", "single cycle" and "continuous running" conditions. Dummy plugs may be used in control panels to render control positions inoperative and to isolate parts of the control circuit.
Patent GB-1221666-A (GB)
Title: Two beam holography with reduced source coherence requirements
Inventor: LEITH EMMETT NORMAN
IPC: G03H1/06
Filed: 1968-05-16
Abstract: 1,221,666. Holograms. HOLOTRON CORP. May 16, 1968 [May 16, 1967], No.23225/68. Heading G2J. In making holograms by the two-beam off-axis method, the coherence requirement of the source radiation is reduced from known methods by directing a parent beam of spatially coherent radiation to a first position P 1 , separating the parent beam into diffracted orders at the first position, blocking out all but at least two of the diffracted orders at a second position P a  with a spatial filter 20, passing a first of the unblocked diffracted orders through a transparent object 10 at a third position P 3  and by-passing the object with a second unblocked diffracted order, and producing an image of the first position P 1  at a fourth position P 4  with the radiation from the first and second unblocked orders, which orders interfere to produce a hologramof the object on a recording medium 22 located at position P 4 . The unblocked orders may be a zero order and a first order diffraction; a first order and a zero order diffraction; or both first order diffractions. The parent beam may be an electron beam, may emanate from a mercury arc source or may emanate from a pulsed laser source. A lens 18 gathers all the diffracted orders from diffraction grating 16 located at P 1  and focuses them at the position P 2  where is located the spatial filter 20.
Patent GB-836032-A (GB)
Title: Extraction of iron from iron-bearing titaniferous raw materials
IPC: C22B1/02
Filed: 1956-08-27
Abstract: Iron is hot-leached from ilmenite-containing material with aqueous sulphuric acid under reducing conditions after a preliminary roasting in a finely-divided state and under oxidizing conditions.  German Specification 490,600 also is referred to.
Patent GB-890503-A (GB)
Title: Improvements in and relating to the separation of ions
Inventor: SLOUGH WARWICK
IPC: B01J47/12
Filed: 1957-07-23
Abstract: 890,503. Electrodialysis. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 18, 1958 [July 23, 1957], No. 23311/57. Drawings to Specification. Class 41. Ionic species of the same charge, e.g. a mixture of Cl, Br and I ions or Ag and Na are separated by electrodialysis using a permeable membrane containing a strongly acidic or basic ion-exchange resin, which includes a # electron system, whereby it exhibits the property of charge transfer interaction with one of the ions to be separated, but only to a small extent with the other ions. It is stated that an ion carrying free electrons, is brought geometrically close to the ion-exchange site and overlaps with the # system bearing a proton, thus separating that ion. In the series Cl, Br, I the iodine is most polarizable and exhibits the largest charge transfer. The CNS ion lies between iodine and bromine. The resins used incorporate a # electron system, i.e. an unsaturated chain or ring, e.g. CO, CN, ethylenic, acetylenic, azo groups, and polycyclic compounds. A quinoline nucleus shows greater selectivity between anions than m-toluidine. The following resins are given as examples: (1) a copolymer of styrene and 4-vinyl pyridine quaternated with dimethyl sulphate; (2) a copolymer of acenaphthylene and 4-vinyl pyridine similarly treated with dimethyl sulphate; (3) vinyl chloride copolymerized with ethylene diamine and then 8-amino-quinoline and quaternated ; (4) methyl vinyl ketone polymerized with vinyl acetate and the resin formed into a film and sulphonated. Films of such resins are used as membranes in two or three cell systems to separate halogens, Ag (CN)2 and Au (CN)2, UO2 (SO4)2 and UO2 (SO4)3; Ag, Au; Ga, In, Tl and Hg. For example, an anode compartment contains K2SO4 solution, separated from a centre compartment by a cation-exchange membrane also containing K2SO4. The cathode compartment having an anion-exchange membrane contains KCl and KI. Graphs are given showing the increase in transport of I ions to the central compartment, and when using a membrane containing 8-amino quinoline as a # component approaches complete separation of I from Cl.
Patent GB-507127-A (GB)
Title: Improvements in or relating to watch cases
IPC: G04B37/08
Filed: 1938-08-09
Abstract: 507,127. Watches. MARTI, F. Aug. 9, 1938, No. 23512. [Class 139] A watertight watch case comprises at least two parts, one part being the back 24, with an elastic packing, e.g. synthetic resin 34 disposed therebetween, and is characterized by a spring leaf 29 the middle portion of which is applied against the outer face of the back while the elongated ends 30, 31 are bent up and fixed to the other part 25 of the case so that the packing is firmly pressed between the parts over the whole circumference. In a modification, the ends 30, 31, are disposed between the parts 25 and 27 and are fixed to the latter, an outer cover being applied at the back of the watch. In a further modification, the packing 34 is disposed in a recess in the part 25.
Patent GB-355007-A (GB)
Title: Improvements in scraper blades for paper drying drums and like devices
IPC: D21G3/00
Filed: 1930-08-06
Abstract: 355,007. Doctors for paper-making machines. WILLIAMS, W. P., 24, Southampton Buildings, London.-(Holtzmann et Cie, Akt.-Ges., E. ; Weisenbachfabrik, Murgtal, Baden, Germany.) Aug. 6, 1930, No. 23602. [Class 96.] Scraper blades a for doctors of paperdrying drums and the like are formed with the part extending from the outer edge of the clamping-device c to the edge coacting with the drum b of curved section. The degree of curvature is preferably so chosen that the arc of contact with the drum is approximately equal in Length to the thickness of the blade. The greater stability of the curved blade makes it possible to reduce the thickness and the increased springiness obtained thereby gives a better cleaning effect.
Patent GB-720546-A (GB)
Title: Improvements in or relating to spectacles
Inventor: GRIFFITH FEARNLEY FREDERICK WI
IPC: G02C1/04
Filed: 1951-10-10
Abstract: 720,546. Spectacle frames. BENTLAY, Ltd. Oct. 10, 1952 [Oct. 10, 1951], No. 23620/51. Class 97 (1). In spectacle frames of the brow-bar type wherein the lenses are held in grooves in the brow member by means of pins or screws, the brow portion over each eye is concavely curved where it extends past each fixing pin or screw and the base of the groove at these points is more strongly concave to provide a locally increased depth of groove for receiving the fixing pin or screw. As shown, the lower edge 18 of the brow portion 14a forms a smooth concave curve, and the base of the groove 19 is more strongly curved than the outer edge at the points 24 and 25 to provide locally deepened portions for receiving the fixing pins 20. Other forms of brow-bar and fixing arrangements are shown.
Patent GB-1420837-A (GB)
Title: Method of reducing the content in particulate polyolefins of  halogen derived from catalyst components
IPC: C08F6/02
Filed: 1973-05-18
Abstract: 1420837 Purifying Ziegler polyolefins BADISCHE ANILIN- & SODA-FABRIK AG 18 May 1973 [19 May 1972] 23725/73 Heading C3P The halogen content of a dry particulate polyolefin, derived from a Ziegler catalyst, is reduced by subjecting the polyolefin to a purification treatment involving the passage of gas therethrough, wherein the purification is effected in a gas phase fluidized bed, the purifying gas being a mixture of nitrogen, steam and an alkylene oxide in the volume ratio 100 : 0À1 to 20 : 0À1 to 20. Typically the polyolefin is polypropylene and the alkylene oxide is propylene oxide.
Patent GB-657486-A (GB)
Title: Machine for moulding objects from paper pulp
IPC: D21J3/00
Filed: 1947-08-27
Abstract: 657,486. Moulding articles from paper pulp. MARGUERAT, G. Aug. 27, 1947, Nos. 23775 and 23776. Convention dates, March 3, 1943, and June 17, 1943. [Class 87 (ii)] A machine for moulding and removing from their moulds, by the method claimed in Specification 644,428, articles made from paper pulp by suction through the moulds comprises sets of foraminous moulds 25 depending from carriers 27 slidable on suction pipes 21 to the ends of which are secured members 22 carrying foraminous bags 24 enveloping the moulds and secured by their closed ends to the moulds. The pipes 21 radiate from a hub 8 which is intermittently rotated through 90 degrees and reciprocated vertically between successive rotary movements by cams 45, 48 acting through rods, levers and racks and pinions. In one position of a mould carrier the moulds and bags are dipped into a pulp bath 30 and suction applied through a pipe 15 communicating with pipe 21 through a passage 10 in the hub 8. In another position of the carrier the carrier is intercepted by a pivoted fork 60 engaging a collar thereon and is thus prevented from moving down with the rest of the assembly. The consequent relative movements of the moulds 25 and bags 24 strips the articles 63 from the moulds (Fig. 1). During movement of the articles 63 from the moulding to stripping positions, suction is maintained on them to dewater them in a manner similar to that described in Specification 651,205. The articles may be further dewatered at an intermediate position 90 degrees from the moulding position by inserting them, still on the moulds, into rubber pockets 72 (Fig. 1) which compress the articles by virtue of the internally applied suction and atmospheric pressure acting externally. Collected water is removed at the end of the operation by opening a valve 78, operated by a rod and lever 79, 76, allowing a current of air to enter the moulds via depending pipes 28<SP>1</SP> to carry off the water through the suction tubes 21 communicating with the moulds by ports 29 and depending pipes 28. The rubber pockets may be enclosed in metal sheaths and a superatmospheric pressure applied between the pockets and sheaths to improve the dewatering. The Specification as open to inspection under Sect. 91 states that the flexible bags 24 may be dispensed with, a plate mounted on the ends of a pipe 21 and engaging the edges of the moulded articles being used to strip the articles directly from the moulds when the mould carrier has been engaged by the fork 60. Before the removal operation, but after the dewatering operation, the articles on the moulds are again inserted into pockets and compressed air applied internally to detach them from the moulds, a slight suction subsequently bringing the articles back on the moulds for transport to the final stripping position. The pockets last referred to may be mounted on springs. This subjectmatter does not appear in the Specification as accepted.
Patent GB-319610-A (GB)
Title: A silencing attachment to flushing cistern syphons
IPC: E03D1/06
Filed: 1929-08-06
Abstract: 319,610. Hacking, J. E. W. Sept. 24, 1928, [Convention date]. Siphon discharge water-waste preventers.-A silencing attachment comprises a chamber 5 with an air inlet 6 and outlet 7, the latter being connected to the top of the siphon, the chamber having a cross-sectional area much greater than that of the air inlet, and that of the outlet being preferably less than that of the inlet. The attachment may he integral with the siphon, and the air inlet pipe may be outside the chamber.
Patent GB-599570-A (GB)
Title: Improvements in methods of and apparatus for injection moulding of thermoplastic materials
IPC: B29C45/14
Filed: 1945-09-18
Abstract: 599,570. Injection-moulding articles with embedded inserts. THURGAR, BOLLE, Ltd., (Cretin, A.). Sept. 18, 1945, No. 24139. [Class 87 (ii)] A reinforcing wire 33 is located in a mould 10, 11, by means of pins 13. Thermoplastic material such as cellulose acetate is injected through the channel 32 and when the mould is full the piston 23 is forced outwards, moving the cam bars 26, 27, to allow the pins 13 to be moved out by the pressure of the moulded material so that their ends lie flush with the sides of the mould cavity. After moulding the moulded article is pressed between heated dies to remove the imprint of the inner ends of the pins 13. Combs, knitting needles, or spectacle frame sides or fronts may be made by the method. In the case of spectacle frames the hinge parts may be incorporated with the reinforcing wires. For a comb the reinforcement may be in the form of a strip of metal extending within the back of the comb and formed with teeth which extend part way along the teeth of the comb.